sub base
 

is there a mod where you can dock your sub?

i think it would awesome, so you can see other subs and ships and maybe some activity from a nearby airport...

just an idea :)

You can build your own and script it in mission editor however the dock tends to float away the ships stay where they are and end up sinking because of damage and the planes are like busses never on time.

So put the dock properly on land the ships at anchor and well should be fine.